Cows can sleep standing up, but they can only dream lying down.
745
47% of people have a nightmare at least once a month.
186
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6
Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
149
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15
Sea otters hold hands while sleeping so they don’t drift away from each other.
104